The top-Higgs coupling is crucial for the production of Higgs bosons at the LHC.
The first analysis concerns the polarisation of W bosons produced in the decays of top-quark–antiquark pairs.
Observing the Higgs via its decays into pairs of fermions further tests the predictions of the Standard Model.
A precise measurement of the mass of the W boson, which was discovered at CERN in 1983, is vital because it is closely related to the masses of the top quark and the Higgs boson.
Heisenberg and his student Euler realised that photons may scatter off of each other through a quantum-loop process involving virtual electron and positron pairs.
It is quite improbable for two colliding protons to produce a W or Z electroweak gauge boson. Producing two or more W or Z bosons in the same collision is even less likely.
The two heaviest quarks, the bottom and top, are particularly interesting because they have the largest couplings to the Higgs boson.
Twenty years after its discovery at the Tevatron collider at Fermilab, interest in studying the top quark at the LHC is higher than ever.
ATLAS has recently measured the total cross-sections of single top-quark and top-antiquark production via the t-channel exchange of virtual W bosons.
Precise measurements of final states containing multiple electroweak bosons (W, Z or γ) offer a powerful probe of the gauge structure of the Standard Model.